Only in Amharic 40
What this means for learners
Amharic and Chamorro share 28 sounds — roughly 41% of Chamorro's inventory overlaps with Amharic. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 8 sounds found only in Chamorro represent the greatest pronunciation challenge for Amharic speakers. The adult brain tends to map unfamiliar sounds onto the closest native equivalent — a process that produces the characteristic "accent" of a second-language speaker. Learning to hear and produce these sounds as distinct requires focused ear training, not just repetition.
Conversely, Amharic has 40 sounds not used in Chamorro. Native Chamorro speakers learning Amharic will face the mirror-image challenge with these sounds.
Phoneme inventories from PHOIBLE. Data reflects one documented inventory per language; some variation exists across dialects and sources.